The Florid Sword was a mysterious swashbuckler and fang-fighter.
Later in the series, we discover that this mysterious man was in fact Gammon, a defiant leader of a rebellion in the Ice Prairies.
“To be sure, Sneem, thou fiend, the Florid Sword hath run you through like unto a bolt of iron lightning piercing the watery depths of the Mighty Blapp, may she run wide and muddy all the days of mine own life! Flayed by my blade! Aha!”
-The Florid Sword